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Search › New York › 390200000X

John Sullivan

NPI 1114839099 · on the registry since 2026 · sole proprietor

Practice

Address
790 Park Ave
Huntington, NY 11743
Phone
(631) 427-3700
Organisation at this address
Family Service League
Family Service Leaque
Advanced Health Network
Family Service League, Inc.
Inferred from a shared address, not stated in the registry.
Clinicians at this address
73

Additional practice sites

  • 320 Carleton Ave, Central Islip, NY

Registry record

Primary taxonomy
390200000X
390200000X
Licence states on file
NY
From the registry's licence fields, which are often incomplete.
Sex
Male
Record last updated
2026-09-17

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in New York